From f6ee542f16785fd944a663b8f4bc203ad150d2de Mon Sep 17 00:00:00 2001
From: Niko Matsakis <niko@alum.mit.edu>
Date: Fri, 31 May 2019 17:14:36 -0400
Subject: [PATCH] make `instantiate_poly_trait_ref_inner` private to this
 module